Method of producing an electrode for non-aqueous electrolytic secondary cells
US6428841B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 27, 2000 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Nov 27, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of producing an electrode for non-aqueous electrolytic cells comprising forming on a collector an electrode active substance layer comprising an active substance composed of polymer carbon, a conductive agent composed of graphite showing a flake form, and a binder, characterized in that when the specific surface area of the active substance as measured by the BET method is denoted by Sa, the compounded weight thereof at the time of kneading by Wa, the specific surface area of the graphite as measured by the BET method by Sg, and the compounded weight thereof at the time of kneading by Wg, the mixture is kneaded by a kneading device under conditions satisfying the following equation:Wa/wg≧2 0.5·Sg/Sa,thereby making it possible to obtain an electrode for non-aqueous electrolytic cells improved in charge and discharge characteristics such as discharge potential, discharge capacity and charge and discharge cycle life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.